What is the derivative of f(x)=cos(ex)f(x) = \cos(e^x)f(x)=cos(ex)?
excos(ex)e^x \cos(e^x)excos(ex)
0
−exsin(ex)-e^x \sin(e^x)−exsin(ex)
−sin(ex)-\sin(e^x)−sin(ex)